Stock links have the bend in them to line up with the sway bar which is more narrow than the axle brackets, most aftermarket do not which can wear the bushings a bit sooner, but bushing kits are pretty cheap.
I fabbbed my own set of endlinks using a rod end at the top, so I don't have to deal with as mush bushing abuse. If you're handy and have the tools that's the way to go, but dagr8tim's link is a fine choice as are most other options from most offroad vendors.
'00 XJ - Somewhat modified
'01 Venture - high mileage, paid for, shut it